
class Student():
    name = ''
    age = 0

    sum = 0

    def __init__(self, name, age):
        self.name = name
        self.age = age

    def do_homework(self):
        print('homework')


# class Printer():

#     def print_file(self):
#         print('name：'+self.name)
#         print('age：'+str(self.age))
# student = Student()

# student.print_file()
